Road-grading machine.



-H. K. GLEMONS.

ROAD GRADING MACHINE. APPLIOATIOQ PI LED JAN. 11, 1907. 924,966.Patented June '15, 1909.

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ROAD GRADING MACHINE.

APPLIOATION FILED JAN.11,1907.

PatentedvJune 15, 1909.

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aha!" H. K. OLEMONS. ROAD GRADING MACHINE. APPLIOATION FILED JAN .11',1907.

Patented June 15, 1909.

3 SHEETS-SHEET 3 formed by an angle bar 11,.and on its back,

- form of an angle bar 18, both of which bars. 40'

UNITED STATES PATENT OFFICE.

HARRY K. CLEMONS, OF ST. PAUL, MINNESOTA.

noan-enamnenacnmn.

Specification of Letters Patent.

' Patented June 15, 1909.

Application filed January 11, 1907. Serial No 351,812.

To all whom it may concern:

Be it known that I, HARRY K. CLEMONS, a citizen of the United States,residing at St. Paul, 11.: the county of Ramsey and State of Minnesota,,have.invented .certa'in new and useful Improvements in Road-GradingMachines; and I do hereby declare the following to be a full, clear, andexact descri tion of the invention, such as will enab eothers skilled inthe art to which it apper-' tains to make and use the same.

My invention has for its object to provide 7 an improved road. gradingmachine, and to this end, it consists of the novel devices andcombinations of devices hereinafter described and' defined in theclaims. 7

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views.

Referring to the drawings: Figure 1 is a plan view of .the road Fig.2 isa view principal illustrating on -a larger scale than in theother'views, the means for imparting angular adjustment to the wheels,the said parts being viewed from the rear.

The scraper blade 2 which is ofthe ordinary. construction, is providedat its upper. edge with a reinforcing flange preferably a considerabledistance above its lower edge, it is provided with another flange in the11 and 18 extend from end to. end of the blade 2. A beam 26 is connectedby a loose joint 11 to the central portionof the upper flange of theangle bar 11, and as shown extends'both forward and rearward thereofatapproximately a right angle thereto. At the rear of the scraper blade,is a pair of upright swinging brackets 3 having trunnions at theirforward ends, which trunnions at their upper ends are loosely pivoted inthe SU pro ecting flange of the angle bar 11, and at their low er endsare pivoted in a sliding bar: 16 mounted on the projecting flange oftheangle barlS, the said flange being slotted at 18 to permit angularadjustments of the lower portions of said brackets 3, as best H shown inFig. 4. An alinement bar 5 which has hooked ends connected toeyes 27 onthe brackets 3, connects the said brackets for parallel swingingmovements. v I The main wheels-1 are suitably journaled on trunnionslocated at the rcarw'ardly pro-. -jectingends of crank axles .4, thatare lnterniediately journaled in the intermediate por- -tions of theswinging brackets 3,7 and as shown, are provided withforwa'rdly projecting ends connected by short links 7 to-the short lower arms of operatinglevers 8. These levers =8 are -pivotallyconnected to-notched'latch-seginents 9, shown as rigidly'seeured to --the angle bar -11 ofthe scraperblade. These leversr'and latch segments serve to'liold thecrankf axles 4 in 'diflerent independent adjustmentsfi By suchadjustments, as-is evident, the-opposite-ends of the scraper blade '2may be independently raised and lowered,

and the blade'may be set to scrape either a level surface or a/surfaceinclined in either direction. The forwardly projecting end of the=beanr26 isacarri'ed by a .gage-wheel="23 of "the caster-wheel ;type, which;together with its-pronged bracket '24, constitutes a.

truck serving to support the forward portion of the weight of themachine. As shown, the wheel bracket 24,is provided with a trunnion25-that is pivotally connected to the beam 26, andit isalso "providedwith a perforated segment 32. Bymeans of-the.

in 35, it may be inserted through the 'peroration in the beam 26andthrough one or the other of the perforations in the segment 32.Thewlieel bracket 24:, may, when desired, be locked against lateralswinging movements. Adraw bar '15 is pivotally con- -nected at its rearendat 21* (see Figs. 1 and v 2), to the beam 26 forward oftheextremerear end of the latter; and mounted on=this bar 15, is a-standjard 12'that carries an ordinary seat 13. A foot-operated latch dog 31pivotally. mounted on the draw bar 15,

and is adapted toengage perforations of a "latch bar 19, which as shown,'is segmental,

.in forin'and at its ends, is securely but loosely anchored at"19 tothe-flange of-the angle bar 11. The pole' 29 is'hinged or pivotallyconnected to the forward end of the draw bar 15, as shown by means ofmetal straps 3O and a'coupling pin" 28. A shim or spacing block 34secured on the beam 26,*holds the latchbar 19 in a slightly raisedposition, as shownimFig. 2; and a clip or keeper secured to'theunderside of the draw bar 15,

liolds'the' latter-down in close engagement desired angle in respect tothe scraper blade.

2, on either side of the beam 26. The pole 'and draw bar 15 will, ofcourse, always remain in the line of draft, so that adjustments of thesame in respect to the latch bar 19 willchange the angle of the blade 2with reference to the line ofdraft, and permit the blade to be set atthe will of the operator, so that itwill work the earth continuously inone direction from a single ditch to the center of the grade, whilemoving in'either direction. The end of the slidin bar 16 is pivotallyconnected to the depen mg end of a hand lever 10 that is pivotallyconnected to, and cooperates with a suitable notched latch segment 14,ri idly secured to the angle bar 11 with the b ade 2. This lever andlatch segment serve to hold the swinging brackets 3 in different angularpositions in respect to avertical' line, as best indicated by dottedlines in Fi 4:. Hence, through the mechanism justdesoribed, the wheelsmay be set either in a perpendicular or in oblique positions at the willof the operator. On the so-called alinement bar 5, are stop collars 6that are adapted to enga e the beam 26 and a keeper strap 26, see ig. 2.These stop collars 6 are made adjustable by vmeans of a pin or key 33,that is adapted to be inserted mto the perforations therein and throughperforations in the said alinement bar 5.

The numeral 17 indicates a V shaped brace or bracket, the prongs ofwhich, at

their forward ends, are securely but loosely connected to the projectingflange of the angle bar 18 of the scraper blade 2; and at its rear endportion, said bracket is adjustably connected to the rear endportion-of'the beam 26, as shown, b means of a nutted bolt 36. passed'theret rough and through one or the other of several perforations 37 inthe said beam 26. The beam 26, the scraper blade 2, and the brace 27,form" an adjustable triangular structure in which the angle to which thesaid blade will be set in respect to a vertical line de ends on theposition in which the rear en of said brace 17 is connected to the rearend of said beam 26. ad'ustment is indicated by full and by dotted inesin Fig; 2. At the same time,

the said brace 17 serves to hold the scraper blade always in aright'angle to the said beam 26. What I claim and desire to secure by'Let- .ters Patentof the United States is as follows:-.

Y 1. A road-grading machine, the blade secured to a pair of flangesextending the entire length thereof; said flanges supporting in athingeor pivoted manner a air of depending swingmg brackets capab e of anoscillating or swinging motion with means for holding said swinginbrackets .where set substantially as described.

2. In a road-grading machine the combi-' nation with a pair of wheelsconnected to a pair of swinging oscillating brackets pivotally attachedto ablade with means for holding said swinging brackets where setsubstantially as described.

3. In a road-grading machinethecombination with a pair of wheelsconnected with a pair of bell crank axles 1ournaled through a pair ofoscillating or swinging arms or brackets, said brackets in turn beingpivot I .ally connected to another pair of flanges rigidly attached 'toa blade with means for raising or lowering the blade and Vljoldmg samewhere set, by a connection with the forward ends of said bell crankaxles manipulating same upward or downward substantially as described.

4. In a road-grading machine the combination with an alinement barconnecting a pair of swinging brackets and holdlng said brackets atvarious angles with reference to the blade of means for holding samewhere set substantially as described.

In a road grading machine, the combination with ascraper blade, of apair of brackets pivotally connected to said blade, crank axles pivotedto said brackets, and adjustable laterally therewith, wheels journaledon'said crank axles, means for ad'usting and holding said crank axles indi erent positioiis, and means for adjusting said brackets and wheelsfrom perpendicular into obligue angle positions, substantially asdescribe 6. In a road-gradin machine, the combination with a pair 0%levers 8 engageable innotched segments 9 fulcrumed to pivots 36,engaging to the ends of a pair'of bell- 11, and slide 16, and capable ofmoving latorally, slide 16 carrying swinging brackets 53 and wheels 1connected thereto from a ver' tical to an oblique angle, and holding thesame where set, substantially as described.

8. In a road-grading machine, the co1nbination with an alinement bar 5,capable of changing the angles of the swinging brackets 3, and thewheels 1 attached thereto to any desired angle with reference to theblade and by properly adjusting slides or collars 6 rigidly securewheels 1 at the various an gles with reference to the blade and holdsame where set, substantially as described.

" lessee 9. In a road grading machine, the 'combi nation with lateralbraces 17, being ca 'able.

of adjustment forward or backward on' cam 26 at their npper part andsecured to blade 2 at their lower parts in such a manner as to admit ofblade 2 being tilted or changed to various angles-with reference to beam26.

I and held where set, substantially as described.

10. In a road-grading machine the combi- "nation with a beam secured tothe top of flange 11, and extending forward and backward'from center ofand at an angle with blade 2, a truck wheel pivotally connected w-it hand supportingandcarrying the front end of beam .26,with'meansforcha'nging the angle of saidwheel or truck with refer,-

ence to its line of draft and holding the same i where set,substantially as described,

' 11. In aro'ad-g'rading machine, the combination with a pole pivotallyconnectedwith a draw bar, a draw bar at its rear end pivot allvconnectedto a beam to the rear of blade-the forward end of said bar capable ofpassing over blade and describing the segment of a circle and formingvarious an gles with reference to the blade thereof, with means ofholding said bar where set, substantially as described.

12. In a road-grading machine the combination with a draft bar15,,pivotally connected at its rear end to rear of'beam 26, beam 26supporting segment .19, segment 19 secured to beam 26, and-at the endsto flan e v, 11,- and bearing on its upper surface t e draft bar 15,foot operating dog latch 31 engaging with either of the several perforatiqns'bar 15 and segment 19 are provided with. holding same where set,substantially as described. a

13. In a road grading machine, a scraper blade, a beam connected to theupper central portion of said scraper blade'and projectingrcarwardthereof, and a brace adjustably connected at its rear portion to therear portinn of said beam, and connected atits forward portion to alower portion of said. scraper blade, the adjustments of said brace onsaidbeam serving to vary the vertical pitch of said blade.

14. In a road grading machine, a scraper blade, a beam connected to the11 per central portion of said scraper blade an projecting rearwardthereof, said beam having a multiplicity of perforations in'its rearend, an

approximately. V shaped brace the forwardly projecting prongs of whichare attached to a lower portion of said scraper blade on opposite sidesof said beam, and a bolt cooperating with the perforations in said beam,to adjustably connect the rear portion of said brace to the rear portionof said'beain,"tlieadjustments of said brace on said beam serving tovary the vertical pitch of said scraper blade.

'15. In a road grading machine, the comthe front and rear ov said blade,:mean's adjnstably supporting said scraperblade from said wheels, a beamsecured to the upper .binat ion with -a -scra "r-blade, of wheels at"centralportion qfsaid-scraper blade-and: projecting rearward ther of,andy'abrace connected ,to a=lower orti n of said scraper-y a blade onopposite si es of said beam and" adjustablyc-onneotedat its rear portionto. thejreanportion "of said beam,'the adjustments of said brace on saidbeam serving to yarythe. vertical pitch of said scraper blade.

16. In a road grading machine, 'the-confbination with a scraper blade,of brackets connected toj'said blade forlateral swinging movements,crank axles connectedto said bracketsfor vertical osclllatory movements,

freedom for both lateral and-vertical swinging movements, and to therear portions of which crank axles, the said rear wheels are adjustingsaid crank axles, and means hol ing the said crank axles forparallellateral swinging movements, substantially as dgk;

scribed.

.jonrnaled, independent devices for verticalliy I 18. In a road gradingmachine, the com bination with a scraper blade, of supportin wheels at.the front and rear of the sai blade, crank axles connected to'saidscraper blade for lateral and vertical swingmg" movements, to the rearportion of which crank axles the rear supportm wheels are j ournaled,independent devices or vertically.

adjusting said crank-axles, a beam connected to the upper centralportion of said scraper blade a projecting rearward thereof, a

brace connected to the lower portionof said scraper bladeon oppositesides of said beam, and connected at its rear portion to the rearportion of said beam, a draw bar pivotall connected at its rear end tosaid beam,'bac

of said scraper blade, means for locking said v draw bar n differenthorizontal angular "adjustments in respect to saidbeam and scraperblade, and a pole connected to said draw bar. 19. In a road gradingmachine, the combination with a scraper blade, of a beam connected. tothe central upper portion of the said scraper blade and projectingrearward thereof, a brace connected to a lower. portion of said scraperblade and tothe rear portion of said beam, a draw bar pivotally.connected to said beam at the rear of said for horizontal and verticalswinging move- .holding said crank axles for parallelhoriscrap'er'blade, and means for securing said 1 drawbar in differenthorizontal angular adjustmentsin respect to said beam and to saidscraper blade.

20. In a road grading machine, the combination with a scraper blade andWheels supportingsame at the front and rear, of crankaxles connected tosaid scraper blade ments, and to the rearwardly prQ ecting portionsofwhich crank axles the rear Wheels are journa cd, independent devicesfor verti- I cally adjusting said crank axles, means for zonta'l;swinging movements, a beam connected to the central upper portion ofsaid scraper blade and projecting rearward thereof, a brace connected toa lower portlon of said scraper blade andv adjustably conent horizontalangular adjustments in respect to said beam and scraper blade, and apole connected to the fonward end of said draw bar, substantially asdescribed.

In testimony whereof I my signature in the presence of two witnesses. v

HARRY K. CLEMONS. Vitnesses: 1

A. H. LYNCH, EDWARD H. WVmson.

